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930s rule the wasteland
 
h20cooled7's Avatar
 
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Question adjustable boost knob?

i think i have a adjustable boost valve under the left side of my dash. how do these work, when i fool with it it doesnt seem to make a difference.
pete
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1980 930 Turbo
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Last edited by h20cooled7; 03-06-2007 at 04:41 PM..
Old 03-04-2007, 10:29 AM
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Re: adjustable boot knob?

Quote:
Originally posted by h20cooled7
i think i have a adjustable boost valve under the left side of my dash. how do these work, when i fool with it it doesnt seem to make a difference.
pete
What makes you think it's an adjustable boost knob verses a knob of some other sort?
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Old 03-04-2007, 03:25 PM
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Be careful... could be brake bias
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'88 Blk/Blk 930 ('Lucy') - Not Stock & Not Running
Old 03-04-2007, 03:29 PM
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does it sound stock? vent control of some sort? i can see plumbing off my wastegate going to the front.
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1984 944
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Old 03-04-2007, 04:26 PM
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I have a Boost Knob kit for sale on Ebay if you want to see what pictures look like of this type of unit. Its quite significant and has the hoses runnig from the wastegate to it and back.

See: 260092579249
Old 03-04-2007, 10:15 PM
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Pete -

Let's see some knob head-on, and under dash pictures in order to help you -
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Old 03-05-2007, 08:40 AM
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pic

OK ILL POST TONITE[IMG]C:\Documents and Settings\PETER LONSIAK\My Documents\My Pictures\Picture[/IMG]
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Last edited by h20cooled7; 03-06-2007 at 04:42 PM..
Old 03-05-2007, 10:32 AM
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i posted the pic self titled
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Old 03-06-2007, 04:46 PM
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Yup, that's a boost knob. I can see the regulator body behind the carpet.
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Old 03-06-2007, 05:26 PM
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Why would someone add a boost knob to a CIS turbo motor.....
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Old 03-06-2007, 05:36 PM
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SO THIS WILL DO NOTHING ON A CIS MOTOR?
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Old 03-07-2007, 09:01 AM
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Yea it will. I would suggest you make your adjustments in 4th gear. In every other gear things are happening way to fast.
Old 03-07-2007, 09:59 AM
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Hell yes, it will.
I assume you have EFI and he computer is adjusting the AFR when you goof with the knob.

No, you have CIS and when you "crank the knob" you are seriously messing with the AFR. This isn't an Eagle Talon, Evo, WRX, or a car with a computer.

Get above .8 bar without verification of all functioning CIS components, and you are in unknown territory.

Check, verify, and keep the boost at one level.
I guess I don't understand the obsession with "adjustable boost" - on a stock CIS 930, it is damn foolish.
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"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-07-2007, 10:15 AM
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no the car is not stock i think it is a stage one ********. i think i just wnat to set for maximum boost ,can i just shut it off and leave it?
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Old 03-07-2007, 02:27 PM
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We need to see some pictures and specifications - take some and dig up the info you have.
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"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-07-2007, 02:34 PM
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i dont have any info thats why im asking . I bought the the car sight unseen off the net. pretty scary huh but it all went in my favor. the guy who sold it to me didnt tell me all the goodies that i got with it. i adjusted the valves and the valvetrain looked great inside. if i want full boost do i turn it clockwise or counterclockwise? i just want to put it on full boost and leave it there.
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Old 03-07-2007, 05:07 PM
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Dial it up all the way and tell us what happens. Nah, don't.
Take any pictures yet?
Let's see the intercooler, boost knob, turbo, top end and the car itself.
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 03-07-2007, 06:19 PM
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ill try to get them this weekend, how do you repost pics on this thread? or is it easier to just post a new one?
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Old 03-08-2007, 02:30 AM
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Get on a highway with no traffic. Preferably straight for several miles. Get it in 4th gear with the pedal floored so you are showing full boost. Then adjust it accordingly.
Old 03-08-2007, 08:49 AM
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Sounds like fun!!
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Old 03-08-2007, 09:07 AM
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